The demand for Indoor Location Based Services (LBS) is increasing over the past years as smartphone market expands. There's a growing interest in developing efficient and reliable indoor positioning systems for mobile devices. Smartphone users can get their fixed locations according to the function of the GPS receiver. This is the primary reason why there is a hugen demand for real-time location information of mobile users. However, the GPS receiver is often not effective in indoor environments due to signal attenuation, even as the major positioning devices have a powerful accuracy for outdoor positioning.